Carbon Dioxide Laser Treatment of Cutaneous Neurofibromas

What are cutaneous neurofibromas?

A cutaneous neurofibroma is a benign nerve-sheath tumour that develops in or just under the skin. It may look like a soft bump, dome-shaped papule, small nodule, or pedunculated skin-coloured growth. Some are pink, brown, bluish, or similar in colour to the surrounding skin.

People may describe them as:

• soft bumps on the skin
• small cutaneous neurofibromas
• discrete cutaneous neurofibromas
• multiple cutaneous neurofibromas
• solitary cutaneous neurofibroma
• neurofibroma cutaneous lesion
• NF1 cutaneous neurofibroma

A common clinical clue is the buttonhole sign cutaneous neurofibromas can show: when gentle pressure is applied, the lesion may feel as though it sinks into the skin like a button through a buttonhole. This sign can support the diagnosis, but a doctor should still assess lesions that are changing, painful, firm, ulcerated, bleeding, or unusual.

NF1 cutaneous neurofibroma: why do they develop?

Many people with neurofibromatosis type 1, or NF1, develop cutaneous neurofibromas over time. The development of cutaneous neurofibromas often begins around adolescence or adulthood and may continue gradually through life. Some people have only a few. Others develop hundreds or even thousands.

The number, size and location of cutaneous neurofibromas vary widely. Two people with NF1 can have very different skin findings, which is why treatment planning should be individual rather than based on a one-size-fits-all approach.

Plexiform vs cutaneous neurofibroma: what is the difference?

A common search is plexiform vs cutaneous neurofibroma, and the distinction matters.

A cutaneous neurofibroma usually sits in the skin and appears as a separate, soft, well-defined skin lesion. These are often the lesions considered for CO₂ laser treatment, shave removal, electrodessication, or surgical excision.

A plexiform neurofibroma grows along larger nerves or nerve branches and may be deeper, more diffuse, irregular, or rope-like. A cutaneous plexiform neurofibroma may involve the skin surface but can also extend into deeper tissue. Plexiform lesions need more careful medical assessment because their behaviour, treatment options and risk profile are different from ordinary cutaneous neurofibromas.

If a lesion feels deep, fixed, rapidly growing, very painful, unusually firm, or different from your other lesions, it should be reviewed before any laser treatment.

Why consider cutaneous neurofibromas removal?

People seek cutaneous neurofibromas removal for many valid reasons. These may include:

• repeated rubbing on clothing, bras, collars or waistbands
• shaving irritation
• pain, stinging, burning or itch
• bleeding after minor knocks
• social embarrassment or reduced confidence
• facial or neck lesions that feel highly visible
• difficulty managing a large number of lesions
• uncertainty about whether a growth is definitely a neurofibroma

Treatment is personal. Some people want only a few bothersome lesions removed. Others prefer staged treatment for multiple cutaneous neurofibromas over several appointments.

How does CO₂ laser treatment work?

A CO₂ laser targets water within tissue. Because skin contains water, the laser can precisely heat and vaporise selected tissue. In cutaneous neurofibromas treatment, the doctor uses the laser to remove or flatten the chosen neurofibroma while aiming to minimise bleeding and protect surrounding skin as much as possible.

For patients with many small lesions, CO₂ laser treatment may be more efficient than traditional excision because it can address numerous lesions in a session. However, because the laser destroys tissue, it may not provide a full specimen for cutaneous neurofibroma histology unless the doctor separately takes a biopsy or excises a sample.

That point is important: if the diagnosis is uncertain, a biopsy may be recommended before or during treatment.

Who may be suitable for carbon dioxide laser treatment?

CO₂ laser treatment may be considered for people with:

• multiple cutaneous neurofibromas
• small cutaneous neurofibromas
• discrete cutaneous neurofibromas
• raised lesions that catch on clothing
• cosmetically distressing lesions
• lesions that have already been assessed as benign
• NF1 cutaneous neurofibroma burden affecting quality of life

It may be less suitable for lesions that are very large, deep, suspicious, infected, ulcerated, or in areas where scarring would be especially problematic. People with a history of keloid or hypertrophic scarring need careful discussion before treatment.

What happens before treatment?

Before carbon dioxide laser treatment of cutaneous neurofibromas, a dermatologist or trained laser clinician should examine your skin and ask about your medical history. They may check:

• how many lesions you want treated
• which lesions are painful, itchy or changing
• whether any lesion needs biopsy
• whether you have NF1 or a solitary cutaneous neurofibroma
• your history of scarring or pigment change
• your skin type and healing pattern
• medications, including blood thinners or immune-suppressing medicines
• whether staged sessions would be safer than treating too many lesions at once

Photos may be taken for medical records and treatment planning. If you are searching for cutaneous neurofibromas pictures to compare your own skin, remember that online images cannot replace an in-person diagnosis.

What does the procedure feel like?

The treatment area is usually cleaned, marked and numbed. Depending on the number and location of lesions, anaesthetic may be topical, injected locally, or planned differently for larger treatment sessions.

During the procedure, you may notice a warm sensation, light pressure, or a mild burning smell from laser plume. Protective eyewear is used. The doctor treats each selected lesion with the laser, aiming to remove or flatten the neurofibroma while controlling bleeding.

For a few lesions, the appointment may be relatively short. For multiple cutaneous neurofibromas, treatment may be staged across several sessions.

Recovery after CO₂ laser treatment

After treatment, each treated area may look like a small graze, crust, or shallow wound. Mild swelling, redness, tenderness and oozing can happen in the early healing phase. Your clinician may recommend ointment, dressings, gentle cleansing, and sun protection.

General recovery expectations:

• small treated areas often crust and heal over days to weeks
• larger or numerous treated areas may take longer
• redness or pinkness can persist after the surface has healed
• pigment change may be more noticeable in some skin types
• sun exposure can worsen post-inflammatory pigmentation
• picking at scabs increases the risk of scarring

Always follow your clinic’s aftercare instructions, especially if you have many lesions treated in one session.

Possible risks and side effects

CO₂ laser treatment can be very helpful, but it is not risk-free. Possible side effects include:

• temporary redness or swelling
• discomfort during healing
• infection
• delayed healing
• hypopigmentation, meaning lighter skin marks
• hyperpigmentation, meaning darker skin marks
• textural change
• flat, indented, raised or hypertrophic scars
• incomplete removal
• recurrence of treated lesions
• development of new cutaneous neurofibromas elsewhere

The best results usually come from careful lesion selection, realistic expectations, conservative laser settings, good wound care and proper sun protection after treatment.

Will cutaneous neurofibromas come back after CO₂ laser?

A treated lesion may not fully return, but recurrence can happen, especially if part of the lesion remains deeper in the skin. New cutaneous neurofibromas can also develop over time, particularly in people with NF1.

This is why CO₂ laser treatment is often framed as management rather than cure. Many patients choose periodic staged treatment when lesions become uncomfortable, visible, or irritating.

Cutaneous neurofibroma hurts: when should you worry?

A cutaneous neurofibroma can hurt because of pressure, rubbing, inflammation, trauma, or nerve-related sensitivity. However, pain should not be ignored, especially if it is new, persistent, worsening, or different from your usual symptoms.

Seek medical review if a neurofibroma:

• becomes persistently painful
• grows rapidly
• becomes hard or fixed
• changes colour or texture
• bleeds without clear trauma
• ulcerates
• causes numbness, weakness or nerve symptoms
• feels different from your other lesions

Do not laser a suspicious lesion without medical assessment. In some cases, imaging or biopsy may be needed.

Cutaneous neurofibroma histology and histopathology

Searches for cutaneous neurofibroma histology and cutaneous neurofibroma histopathology are common because diagnosis sometimes needs confirmation under the microscope.

On histology, neurofibromas are benign peripheral nerve sheath tumours made up of a mixture of Schwann cells, fibroblasts, mast cells, nerve fibres and collagenous or myxoid stroma. A cutaneous lipomatous neurofibroma is a variant that contains mature fat within the lesion.

Histopathology can also help with cutaneous neurofibromas differential diagnosis, especially when a lesion resembles another skin tumour.

Cutaneous neurofibromas differential diagnosis

Not every soft bump on the skin is a neurofibroma. The differential diagnosis may include:

• skin tags
• intradermal naevi
• lipomas
• dermatofibromas
• schwannomas
• cutaneous myxoma
• epidermoid cysts
• other benign adnexal tumours
• less commonly, malignant or atypical lesions

Is a cutaneous neurofibroma the same as cutaneous myxoma? No. A cutaneous neurofibroma and cutaneous myxoma are different diagnoses, although both can appear as skin lesions and may require histology if the diagnosis is uncertain.

Do cutaneous neurofibromas need MRI, ultrasound, CT or radiology?

Most ordinary cutaneous neurofibromas are diagnosed clinically by a trained doctor. Imaging is not needed for every small skin lesion.

However, imaging may be considered when a lesion is deep, large, painful, rapidly changing, connected with neurological symptoms, or suspected to be plexiform or subcutaneous.

People often search for:

• cutaneous neurofibroma ultrasound
• cutaneous neurofibromas ultrasound
• cutaneous neurofibroma MRI
• cutaneous neurofibromas MRI
• cutaneous neurofibromas CT
• cutaneous neurofibromas radiology

Ultrasound may help assess superficial soft-tissue lesions. MRI is often more useful for deeper nerve-related tumours or suspected plexiform neurofibromas. CT is not usually the first choice for simple cutaneous neurofibromas but may appear in broader radiology workups depending on the clinical context.

Your doctor will decide whether imaging is useful before removal.

CO₂ laser vs surgical excision

Surgical excision remains useful when a lesion is large, deep, suspicious, or needs histology. It may leave a neat linear scar and can provide tissue for diagnosis.

CO₂ laser may be preferred when there are many small lesions and the main goal is efficient reduction of visible or irritating bumps. The trade-off is that laser treatment may carry risks of pigment change, textural change and scarring, and it may not always provide a complete histology sample.

The best option depends on your lesion type, skin type, number of lesions, medical history and goals.

What about selumetinib cutaneous neurofibroma treatment?

People sometimes search for selumetinib cutaneous neurofibroma because selumetinib and other MEK inhibitors are discussed in NF1 care. At present, procedural treatments such as excision, laser and other local techniques remain the main options for cutaneous neurofibromas. Medicines being studied for cutaneous neurofibromas are promising, but they are not a simple replacement for lesion removal in routine practice.

If you have NF1, it is worth discussing your broader care with a specialist familiar with NF1, especially if you also have plexiform neurofibromas or internal tumours.

Cutaneous neurofibromas ICD 10

The ICD-10 code used for cutaneous neurofibromas depends on the coding system, payer, country and clinical context. In ICD-10-CM, a benign peripheral nerve neoplasm may be coded under D36.1 or a more specific D36.10-type code, while neurofibromatosis type 1 is coded separately under Q85.01.

Coding should always be confirmed by the treating clinician or medical coder, especially if the lesion is part of NF1 rather than an isolated solitary cutaneous neurofibroma.

What results can you realistically expect?

CO₂ laser treatment can reduce the number and visibility of selected cutaneous neurofibromas. Many people feel more comfortable in clothing and more confident after bothersome lesions are removed. That said, the goal is improvement, not perfect skin.

Realistic expectations include:

• treated areas may leave small pale, darker or textural marks
• some lesions may need more than one treatment
• new lesions may appear over time
• staged treatment may be safer than treating every lesion at once
• results vary by skin type, lesion depth, body area and healing response

A good consultation should include before-and-after expectations, aftercare planning and a clear discussion of scarring risk.

When should you book a skin check before laser?

Book a medical review before laser if you have:

• a painful cutaneous neurofibroma
• a rapidly growing lesion
• a lesion that feels hard, fixed or deep
• bleeding or ulceration
• a new neurological symptom
• a suspected cutaneous plexiform neurofibroma
• diagnostic uncertainty
• a history of keloid or hypertrophic scarring
• darker skin prone to pigmentation changes
• many lesions and uncertainty about where to start

Laser treatment is safest when the diagnosis is clear and the treatment plan is tailored to your skin.

Frequently asked questions

Is CO₂ laser treatment painful?

The area is usually numbed before treatment. Some people feel warmth, pressure or mild discomfort. After treatment, the skin may feel like a graze or mild burn while it heals.

Can CO₂ laser remove multiple cutaneous neurofibromas in one session?

Yes, in selected patients, CO₂ laser can treat multiple cutaneous neurofibromas in one session. Large treatment areas may be staged to reduce discomfort, healing burden and scarring risk.

Is a solitary cutaneous neurofibroma treated differently?

A solitary cutaneous neurofibroma may be removed with excision, shave removal or laser depending on size, location and diagnostic certainty. If the doctor is unsure of the diagnosis, biopsy or excision for histology may be preferred.

Are cutaneous neurofibromas cancer?

Ordinary cutaneous neurofibromas are benign. However, any lesion that becomes persistently painful, rapidly enlarges, hardens, ulcerates or changes significantly should be assessed.

Are plexiform and cutaneous neurofibromas the same?

No. Cutaneous neurofibromas usually sit in the skin as discrete lesions. Plexiform neurofibromas involve larger nerves or nerve branches and may be deeper, more diffuse and clinically more complex.

Can I remove cutaneous neurofibromas at home?

No. Do not cut, burn, freeze or tie off suspected neurofibromas at home. This can cause bleeding, infection, scarring and missed diagnosis. See a dermatologist or appropriately trained doctor.

Will insurance cover cutaneous neurofibromas treatment?

Coverage depends on your country, insurer, symptoms and whether removal is considered medically necessary or cosmetic. Lesions causing pain, bleeding, irritation or functional problems may be treated differently from purely cosmetic removal.

What should I ask at my consultation?

Ask how many lesions can be treated, whether any lesion needs biopsy, what scarring risk applies to your skin type, how long healing will take, what aftercare is required, and whether CO₂ laser or excision is better for your goals.

Final thoughts

Carbon dioxide laser treatment of cutaneous neurofibromas can be a practical option for people who want to reduce multiple irritating or visible skin neurofibromas. It is particularly helpful when there are many small, discrete lesions and the goal is comfort, appearance and quality of life.

The most important step is careful assessment. Not every lesion should be lasered, and not every patient heals the same way. A dermatologist or experienced laser clinician can help decide whether CO₂ laser, excision, biopsy, imaging, or staged treatment is the safest plan.

If your cutaneous neurofibromas are affecting how you feel, dress, sleep, work or socialise, it is reasonable to ask for help. Treatment is not vanity. For many people, it is part of living more comfortably in their own skin.